18223007 has 8 divisors (see below), whose sum is σ = 19958400. Its totient is φ = 16500760.

The previous prime is 18223003. The next prime is 18223019. The reversal of 18223007 is 70032281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18223007 - 2² = 18223003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18223003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257 + ... + 6042.

It is an arithmetic number, because the mean of its divisors is an integer number (2494800).

Almost surely, 2^18223007 is an apocalyptic number.

18223007 is a deficient number, since it is larger than the sum of its proper divisors (1735393).

18223007 is a wasteful number, since it uses less digits than its factorization.

18223007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6573.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 18223007 is about 4268.8414119056. The cubic root of 18223007 is about 263.1520033860.

Adding to 18223007 its reverse (70032281), we get a palindrome (88255288).

The spelling of 18223007 in words is "eighteen million, two hundred twenty-three thousand, seven".